Clinker remover for furnaces



Jan. 26, 1937. L R. WALKER ET AL 2,068,969

CLINKER REMOVER FOR FURNACES Filed Dec. 16, 1955 2 Sheets-Sheet 1 l7 INVENTORS Lam's RJVal/(er L. R. WALKER ET AL CLINKER REMOVER FOR FURNACES Jan. 26, 1937.

Filed Dec. 16, 1935 2 Sheets-Sheet 2 INVENTORS Lou/l9 fluff aller- Mlll'a'm JDoy/c M'l/[am LMGral/z 5) W 1 A R EY-S UNITED STATES PATENT OFFICE CLINKER REMOVER FOR FURNACES Louis R. Walker, Chicago, Ill., and William J. Doyle and William L. MeGrath, Cincinnati,

Ohio

Application December 16, 1935, Serial No. 54,584

2 Claims.

The object of our invention is a clinker remover for furnaces, by which the clinkers may be removed readily, and the gases arising from the clinkers in the process of removing them, will be carried into the Smokestack.

In the accompanying drawings, Fig. 1 is a longitudinal vertical sectional view, in part diagrammatic, of a hot-air furnace equipped with a clinker-remover embodying our invention.

Fig. 2 is a view partially in elevation, and partially in section, on line 2--2 of Fig. 1.

Fig. 3 is a horizontal sectional view, in part diagrammatic, taken upon line 3-3 of Fig. 2.

Fig. 4 is a detailed perspective View of the front plate for the fire-pot.

We illustrate and describe our invention as applied to a boiler-plate hot-air furnace, but it may be applied likewise to a cast iron furnace. The combustion-chamber comprises a cylindrical dome I, which terminates at its edges in vertical flanges 2 and 3 that connect with the panels 4 and 5 of the front of the furnace, upon which is mounted the water-pan 6, feed-door I and the ashpit-door 8. Within the dome I, a circular plate 9, that constitutes the dead-plate, is mounted upon brackets III, several of which are secured to the inside Wall of the dome at a suitable distance from the bottom edge thereof to afford space within which to mount a mechanical stoker-unit II, which projects up into the combustion-chamber through a central circular opening in the dead-plate 9. Upon the deadplate 9, and adjacent to the wall of the dome I, are supported vertical fire-bricks which constitute the fire-pot I2. Adjacent the front of the fire-pot I2 an arc-shaped plate I3 is located. The radius of the arc of plate I3 is the same as the radius of the dome I, and its edges are welded at I4 and I5 to the edges of the dome (Fig. 3). The upper edge of plate I3 forms a support for plate I6, which forms the bottom face of the feed-door opening (Fig. 1). Plate I3 has in it an opening I! for the frame I8 of the clinkerdoor. The rectangular frame I8 has inwardly projecting feet or flanges I9 and. 20, in which bolts extend for fastening the feet to the deadplate 9. The clinker-door comprises preferably two horizontal bars 2| and 22, which are connected at intervals by a series of short bars 23. The clinker-door is hinged to its frame at 24 and at the opposite edge, has a part of a latch member 25 that engages with a complementary latch member on the frame.

The dead-plate 9 has in it a circular groove or way 26 terminating in tangential ways that lead to the front of the dead-plate as shown in Fig. 3. Beneath the clinker-door we locate a clinker-pan 2'I. It is formed from a plate which has a horizontal portion 28 that fills in the space between the wall of the dome and the wall of the mechan- 5 ical stoker II below the dead-plate, and is sealed to the stoker by means of a ring 29, and has a vertical portion 30 which contacts the front of the stoker, and a horizontal portion which forms the clinker-pan 21.

The mechanical stoker illustrated, comprises a feed-chute 3! for feeding the fuel into a retort 32, and an air-conduit 33 by which air may be blown into the fuel which is fed by the feed-screw upwardly into the retort 32..

In operation, the clinkers that are formed will accumulate on the dead-plate in and over the way or groove 26. Ordinarily these clinkers may be removed by opening the outside clinker-door 8 which is upon the ashpit-door 8, and inserting a clinker or slice-bar into the way 26, and then drawing the clinker toward the front and underneath the clinker-door 23. Where a clinker of unusual size has formed, it would be necessary to open the clinker-door 2 I. The clinkers are drawn to the forward end of the dead-plate and dropped into the clinker-pan 21, and then the outside clinker-door 8' is closed, whereupon the gases arising from the clinkers pass upward and through the grating in the clinker-bars 2|, 22 and 23, thence to the combustion-chamber and out through the smoke-collar 36, radiator 34 to the exit 35, to the chimney. By this clinker-removal construction a ready means is provided for having access to the clinkers, and an efficient means is presented for preventing the gases from the clinkers from entering the furnace-room.

What we claim is:

1. In a furnace having a front with a clinker door, the combination of a fire-pot, a retort extending upward into the fire-pot, means for feeding fuel upward into the retort, a dead-plate closing the opening between the retort and the wall of the fire-pot, an opening in the fire-pot adjacent the clinker door, a frame secured to the wall of the fire-pot and around the opening, a grated door hinged to the frame, the dead-plate having in it a groove adapted to receive a clinker-bar, and a plate located immediately beneath the deadplate and having a depressed portion that forms a clinker-pan beneath the clinker door.

2. In a furnace, the combination of a. frontpanel having in it a feed-door opening, an ashpit opening, doors for said openings, a fire-pot comprising a cylindrical casing having spaced forward edges and vertical flanges connecting its forward edges to the front of the furnace, a dead-plate within the cylindrical casing and forming the bottom of the fire-pot, a mechanical stoker secured to the bottom of the casing and projecting through the dead-plate, a curved plate at the front of the fire-pot and disposed in the space between the dead-plate and the bottom of the 10 feed-door opening, said plate having a recess in 

